unison240 2.40.128 (new formula)
unison240 2.40.128 (new formula)

Needed because unison 2.48 is not protocol-compatible with unison 2.40.

Closes #750.

Signed-off-by: Dominyk Tiller <53e438f55903875d07efdd98a8aaf887e7208dd3@gmail.com>

jimhe/homebrew-versions,Ashton-W/homebrew-versions,coeligena/homebrew-verscustomized,heuermh/homebrew-versions,DomT4/homebrew-versions,UniqMartin/homebrew-versions